Question: Did William the Conqueror build the Tower of London and Windsor Castle?
Paraphrase: Was it William the Conqueror who built the Tower of London and Windsor Castle?
SPARQL (Wikidata): ASK WHERE { wd:Q37594 wdt:P1830 wd:Q62378 . wd:Q37594 wdt:P1830 wd:Q464955 }